AgMIP GGCMI Phase II: EPIC-TAMU Spring Wheat Simulation Outputs

AgMIP's Global Gridded Crop Model Intercomparison (GGCMI) phase II data set contains output from EPIC-TAMU simulations for spring wheat. The data includes crop yield, biomass, planting and maturity days, and evapotranspiration from 31-year simulations under varied CO2, temperature, water, and nitrogen conditions. The archive was contributed by Ashwan Reddy of the University of Maryland, College Park.

Use Cases

• Modeling crop yield sensitivity based on varied atmospheric CO2 levels (360-810 ppm)
• Analyzing growing season length changes based on planting and maturity day variables
• Predicting water use efficiency based on actual growing season evapotranspiration data
• Assessing biomass production under different nitrogen input levels (10-200 kgN/ha)
• Simulating climate adaptation strategies based on the 'none' and 'regain original growing season' assumptions

Strengths

• Simulations cover a 31-year time span using the AgMERRA climate data set
• Output includes five key agricultural variables: yield, biomass, planting day, maturity day, and evapotranspiration
• Experiments are structured across four controlled dimensions: CO2 (4 levels), temperature (6 offsets), water (8 levels), and nitrogen (3 levels)

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• Last update date is unknown; freshness unverified

Provenance

Source

University of Maryland, College Park (Ashwan Reddy) as part of the AgMIP GGCMI project.

Collection Method

Output data from simulations with the EPIC-TAMU crop model.

Time Range

Based on 31-year simulations using the AgMERRA data set.

Freshness

Last updated date is unknown.

Geography

Global gridded coverage is suggested by the project name.